<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style type="text/css">
.wrapper{
    border: none;
    overflow: hidden;
}
        .box{
            width: 529px;
            height: 50px;
        font-size: large;
        }
        .bdbutton
        {
            height: 60px;
            width: 100px;
            font-size: large;
            background: #24a5ff;
            color: azure;
        }
        .sobutton{
                background: forestgreen;
            color: azure;
            height: 60px;
            width: 100px;
            font-size: large
            }
        .bingbutton{
            height: 60px;
            width: 100px;
            font-size: larger;
            background: transparent;

        }
    </style>
</head>
<body>
    <div class="wrapper">
        <form action="www.baidu.com/s" autocomplete="off">
        <span class="left">
            <input type="text" name="wd" class="box">
        </span>
            <span>
            <input type="submit" value="百度一下" class="bdbutton">
            </span>
        </form>
    </div>
            <div class="wrapper">
                <form action="www.so.com/s" autocomplete="off">
                <span class="left">
                    <input type="text" name="q" class="box">
                </span>
                    <span>
                    <input type="submit" value="搜索" class="sobutton">
                    </span>
                </form>
            </div>
    </div>
            <div class="wrapper">
                <form action="www.bing.com/search" autocomplete="off">
                        <span class="left">
                            <input type="text" name="q" class="box">
                        </span>
                    <span>
                            <input type="submit" value=bing class="bingbutton">
                            </span>
                </form>
            </div>
</body>
</html>